views: Start sending mouse events using the EventDispatch interface.

ui/views/widget/root_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/root_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/message_loop.h"
@@ skipping 390 matching lines @@
   UpdateCursor(event);
   SetMouseLocationAndFlags(event);
 
   // If mouse_pressed_handler_ is non null, we are currently processing
   // a pressed -> drag -> released session. In that case we send the
   // event to mouse_pressed_handler_
   if (mouse_pressed_handler_) {
     ui::MouseEvent mouse_pressed_event(event, static_cast<View*>(this),
                                        mouse_pressed_handler_);
     drag_info_.Reset();
-    mouse_pressed_handler_->ProcessMousePressed(mouse_pressed_event,
-                                                &drag_info_);
+    mouse_pressed_handler_->ProcessMousePressed(mouse_pressed_event);
     return true;
   }
   DCHECK(!explicit_mouse_handler_);
 
   bool hit_disabled_view = false;
   // Walk up the tree until we find a view that wants the mouse event.
   for (mouse_pressed_handler_ = GetEventHandlerForPoint(event.location());
        mouse_pressed_handler_ && (mouse_pressed_handler_ != this);
        mouse_pressed_handler_ = mouse_pressed_handler_->parent()) {
     DVLOG(1) << "OnMousePressed testing "
         << mouse_pressed_handler_->GetClassName();
     if (!mouse_pressed_handler_->enabled()) {
       // Disabled views should eat events instead of propagating them upwards.
       hit_disabled_view = true;
       break;
     }
 
     // See if this view wants to handle the mouse press.
     ui::MouseEvent mouse_pressed_event(event, static_cast<View*>(this),
                                        mouse_pressed_handler_);
 
     // Remove the double-click flag if the handler is different than the
     // one which got the first click part of the double-click.
     if (mouse_pressed_handler_ != last_click_handler_)
       mouse_pressed_event.set_flags(event.flags() & ~ui::EF_IS_DOUBLE_CLICK);
 
     drag_info_.Reset();
     bool handled = mouse_pressed_handler_->ProcessMousePressed(
-        mouse_pressed_event, &drag_info_);
+        mouse_pressed_event);
 
     // The view could have removed itself from the tree when handling
     // OnMousePressed().  In this case, the removal notification will have
     // reset mouse_pressed_handler_ to NULL out from under us.  Detect this
     // case and stop.  (See comments in view.h.)
     //
     // NOTE: Don't return true here, because we don't want the frame to
     // forward future events to us when there's no handler.
     if (!mouse_pressed_handler_)
       break;
@@ skipping 22 matching lines @@
   last_click_handler_ = NULL;
   return hit_disabled_view;
 }
 
 bool RootView::OnMouseDragged(const ui::MouseEvent& event) {
   if (mouse_pressed_handler_) {
     SetMouseLocationAndFlags(event);
 
     ui::MouseEvent mouse_event(event, static_cast<View*>(this),
                                mouse_pressed_handler_);
-    return mouse_pressed_handler_->ProcessMouseDragged(mouse_event,
-                                                       &drag_info_);
+    return mouse_pressed_handler_->ProcessMouseDragged(mouse_event);
   }
   return false;
 }
 
 void RootView::OnMouseReleased(const ui::MouseEvent& event) {
   UpdateCursor(event);
 
   if (mouse_pressed_handler_) {
     ui::MouseEvent mouse_released(event, static_cast<View*>(this),
                                   mouse_pressed_handler_);
@@ skipping 148 matching lines @@
 }
 
 gfx::Vector2d RootView::CalculateOffsetToAncestorWithLayer(
     ui::Layer** layer_parent) {
   gfx::Vector2d offset(View::CalculateOffsetToAncestorWithLayer(layer_parent));
   if (!layer())
     offset += widget_->CalculateOffsetToAncestorWithLayer(layer_parent);
   return offset;
 }
 
+View::DragInfo* RootView::GetDragInfo() {
+  return &drag_info_;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RootView, private:
 
 // Input -----------------------------------------------------------------------
 
 void RootView::UpdateCursor(const ui::MouseEvent& event) {
   if (!(event.flags() & ui::EF_IS_NON_CLIENT)) {
     View* v = GetEventHandlerForPoint(event.location());
     ui::MouseEvent me(event, static_cast<View*>(this), v);
     widget_->SetCursor(v->GetCursor(me));
@@ skipping 12 matching lines @@
   if (DispatchEvent(target, event))
     event_dispatch_target_ = old_target;
 }
 
 bool RootView::CanDispatchToTarget(ui::EventTarget* target) {
   return event_dispatch_target_ == target;
 }
 
 }  // namespace internal
 }  // namespace views